QEMU Security Update - Multiple Vulnerabilities
Summary
DLA-845-1: qemu - security update. Affects qemu versions < 1.1.2+dfsg-6+deb7u20. Fixed in 1.1.2+dfsg-6+deb7u20. How to fix ↓
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Background
QEMU is a fast processor emulator that allows users to run virtual machines on various host platforms. It provides support for a wide range of hardware devices and architectures. QEMU is widely used in the virtualization industry and is a critical component in many virtualization solutions. However, several vulnerabilities have been discovered in QEMU that could potentially allow an attacker to execute arbitrary code or cause a denial of service (DoS) on the host system.
Vulnerability Detail
The following vulnerabilities have been identified in QEMU:
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CVE-2017-2615: The Cirrus CLGD 54xx VGA Emulator in QEMU is vulnerable to an out-of-bounds access issue. This vulnerability could be exploited by a privileged user inside the guest to crash the QEMU process or potentially execute arbitrary code on the host system.
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CVE-2017-2620: The Cirrus CLGD 54xx VGA Emulator in QEMU is vulnerable to another out-of-bounds access issue. Similar to CVE-2017-2615, this vulnerability could be exploited by a privileged user inside the guest to crash the QEMU process or potentially execute arbitrary code on the host system.
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CVE-2017-5898: The CCID Card device emulator support in QEMU is vulnerable to an integer overflow flaw. This vulnerability could be exploited by a privileged user inside the guest to crash the QEMU process on the host system, resulting in a DoS.
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CVE-2017-5973: The USB xHCI controller emulator support in QEMU is vulnerable to an infinite loop issue. This vulnerability could be exploited by a privileged user inside the guest to crash the QEMU process, resulting in a DoS on the host system.
These vulnerabilities pose a significant risk to the security and stability of systems running QEMU.
How To Fix
Minimum fixed version
1.1.2+dfsg-6+deb7u20
This is the first release that contains the fix.
sudo apt-get install --only-upgrade qemuTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
Multiple vulnerabilities have been discovered in QEMU that could potentially allow an attacker to execute arbitrary code or cause a denial of service (DoS) on the host system. It is crucial to upgrade the QEMU packages to the latest patched version to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for qemu →
FAQ
QEMU is a fast processor emulator that allows users to run virtual machines on various host platforms. It provides support for a wide range of hardware devices and architectures.
The vulnerabilities in QEMU include out-of-bounds access issues in the Cirrus CLGD 54xx VGA Emulator, an integer overflow flaw in the CCID Card device emulator support, and an infinite loop issue in the USB xHCI controller emulator support.
These vulnerabilities could allow a privileged user inside the guest to crash the QEMU process, resulting in a denial of service (DoS) on the host system. In some cases, the vulnerabilities could also potentially allow the execution of arbitrary code on the host system.
To fix these vulnerabilities, it is recommended to upgrade the QEMU packages to version 1.1.2+dfsg-6+deb7u20 or later. This can be done by following the standard package update procedures for your operating system.
No specific workarounds have been provided for these vulnerabilities. It is recommended to apply the available patches and updates to mitigate the risk.
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